It seems that division by zero is not caught by VFP. In the command window, type ? 1/0 <return>, and you get a line of asterisks, right? (I'm running VFP9 SP2.)

I have a form which evaluates a string expression and sends the result back to its caller. The only way I have found to catch division by zero is in a form method like this:

LOCAL loEx As Exception, lnTmp As Double

*!* THIS.cExpr is entered into an edit box on the form, THIS.nRetVal is the form return value

loEx = .NULL.

TRY

    THIS.nRetVal = EVALUATE(THIS.cExpr)

    lnTmp = 1/THIS.nRetVal

    = MOD(THIS.nRetVal, lnTmp)    && catches error 1307

CATCH TO loEx

ENDTRY

IF ISNULL(loEx)

    THIS.Release()

ELSE

    THIS.HandleException(loEx)

ENDIF

I think it wrong that VFP does not catch this error natively, unless I've missed a SET command or SYS() function.

Any thoughts people?

Laurie Alvey    

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